How many square metres of canvas is required for a conical tent whose height is 3.5 m and the radius of the base is 12 m?

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asked Feb 2, 2018 in Class IX Maths by navnit40 (-2,975 points)

How many square metres of canvas is required for a conical tent whose height is 3.5 m and the radius of the base is 12 m?
Thinking Process 
1.Firstly, determine the slant height of conical test by using the formula,

2.Further, using the formula for curved surface area =πrl which we get the required canvas.

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2 Answers

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answered Feb 2, 2018 by aman28 (-883 points)

Solution of this question 

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answered Feb 17 by Mayank singh (2 points)
In this question we have to find C.S.A of conical tent
so,firstly we have to find the l(length) of ∆
√h×h+r×r
√3.5×3.5+12×12
√12.5+144
√156.25
12.5

C.S.A. of conical tent=πrl
3.14×12×12.5
471m. answer

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